CN115822409B - Rotary shaft door assembly and buffer device thereof - Google Patents

Abstract

A revolving door assembly and a buffering device thereof, the buffering device comprising: the shell is internally provided with an inner cavity; the rotating shaft pin is rotationally connected with the shell and comprises a first matching section and a second matching section which are both positioned in the inner cavity; a damper; the ejector block is clamped between the first matching section and the damping rod; the sliding block is arranged at one side of the second matching section, which is close to the cylinder body; and the elastic piece is clamped between the sliding block and the cylinder body and is used for applying elastic force towards the second matching section to the sliding block. When the buffer device is applied to the rotating shaft door, the rotating shaft door can be automatically closed, and the phenomenon that the door plate clamps hands when the rotating shaft door is automatically closed can be avoided. The buffer device has the advantages of simple internal structure, easy assembly, easy maintenance, compact structure, small volume and high reliability. The rotating shaft door can be opened inwards and outwards.

Description

Rotary shaft door assembly and buffer device thereof

Technical Field

The present disclosure relates to a swing door assembly and a damper thereof.

Background

The rotating shaft door of the shower room can rotate around a rotating shaft to realize the opening and closing of the rotating shaft door. On the swing door, a buffer device is usually required to prevent the swing door from being closed too quickly to hurt hands.

The existing buffer device is complex in structure, and a rotating shaft, a connecting rod mechanism and a damper are arranged in the buffer device. One end of the rotating shaft is connected with the door plate, the other end of the rotating shaft is connected with the connecting rod mechanism, and the connecting rod mechanism is connected with the damper. The connecting rod mechanism can convert the rotary motion of the rotary shaft into linear motion to drive the damper so as to attenuate the motion energy of the rotary shaft door and reduce the door closing speed of the rotary shaft door.

Because the connecting rod mechanism is arranged in the buffer device, the internal structure of the buffer device is complex, the buffer device is difficult to assemble and maintain, has large volume, is easy to age and is easy to damage. Meanwhile, the limiting angle of the rotation of the rotating shaft of the buffer device with the structure is limited by the connecting rod mechanism, so that the rotating shaft door can only be opened into the shower room or only be opened out of the shower room.

Disclosure of Invention

The application provides a buffer device, which is applied to a rotating shaft door and comprises:

the shell is internally provided with an inner cavity;

the rotating shaft pin is rotationally connected with the shell and comprises a first matching section and a second matching section which are both positioned in the inner cavity;

The damper is arranged in the inner cavity and comprises a cylinder body, a damping rod extending from the cylinder body to the first matching section and an elastic part arranged in the cylinder body, wherein the elastic part is used for applying elastic force to the damping rod towards the first matching section;

the ejector block is clamped between the first matching section and the damping rod;

the sliding block is arranged at one side of the second matching section, which is close to the cylinder body;

the elastic piece is clamped between the sliding block and the cylinder body and is used for applying elastic force towards the second matching section to the sliding block;

the first matching section is provided with a first protrusion protruding outwards in the radial direction, the second matching section is provided with a second protrusion protruding outwards in the radial direction, the directions of the top ends of the first protrusion and the second protrusion are mutually perpendicular, and the moment applied by the sliding block to the rotating shaft pin is configured to be always larger than the moment applied by the top block to the rotating shaft pin.

In an exemplary embodiment, the first protrusion is tapered in width from its top end to its bottom end; and/or

The second protrusion is wider in a direction from a top end thereof to a bottom end thereof.

In an exemplary embodiment, a first groove is further provided on the outer peripheral wall of the first fitting section, the first groove being adjacent to the first projection in the circumferential direction of the roller pin and being adjacent to the second projection in the axial direction of the roller pin; and/or

A second groove is further provided on the outer peripheral wall of the second fitting section, the second groove being adjacent to the first projection in the circumferential direction of the roller pin and being adjacent to the second projection in the axial direction of the roller pin.

In an exemplary embodiment, the second mating segment is provided with two second protrusions, the two second protrusions are respectively arranged at two opposite sides of the second mating segment, and the second groove is arranged between the two second protrusions; and/or

The first matching section is provided with two first grooves, the two first grooves are respectively arranged on two opposite sides of the first matching section, and the first protrusion is arranged between the two first grooves. In an exemplary embodiment, the slider is configured as a cylinder which is arranged on the top piece in a sleeved manner, and the slider can slide relative to the top piece in the extending direction of the damping rod.

In an exemplary embodiment, two of the second mating segments are provided, and two of the second mating segments are provided at opposite ends of the first mating segment.

In an exemplary embodiment, the top block is connected to an end of the damping rod facing away from the cylinder.

In an exemplary embodiment, the top block is threadedly coupled to an end of the damping rod facing away from the cylinder.

In an exemplary embodiment, the elastic member is a coil spring sleeved on the damping rod.

In an exemplary embodiment, the opposite sides of the housing are provided with a first through hole and a second through hole coaxial with the first through hole, respectively;

the buffer device also comprises a first gasket arranged in the first through hole and a second gasket arranged in the second through hole;

the first gasket and the second gasket are sleeved on the rotating shaft pin and are in clearance fit with the rotating shaft pin.

In an exemplary embodiment, the housing is further provided with an adjustment screw hole penetrating the housing;

The buffer device also comprises an adjusting screw screwed into the adjusting screw hole;

one end of the adjusting screw is propped against one end of the cylinder body, which is away from the damping rod.

The application also provides a rotating shaft door assembly, which comprises the buffer device, a door frame and a rotating shaft door;

the rotating shaft pin is connected with the rotating shaft door, and the shell is connected with the door frame.

When the buffer device is applied to the rotating shaft door, the rotating shaft door can be automatically closed, and the phenomenon that the door plate clamps hands when the rotating shaft door is automatically closed can be avoided. The hinge door is easy to open. Meanwhile, the buffer device has the advantages of simple internal structure, easy assembly, easy maintenance, compact structure, small volume and high reliability. In particular, the swing door equipped with such a damper can be opened both inward and outward.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. Other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The accompanying drawings are included to provide an understanding of the principles of the application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain, without limitation, the principles of the application.

FIG. 1 is a schematic view illustrating a door assembly with a hinge shaft according to an embodiment of the present application;

FIG. 2 is a schematic perspective view of a buffer device according to an embodiment of the present application;

FIG. 3 is a schematic perspective view of a buffer device according to an embodiment of the present application;

FIG. 4 is a schematic diagram illustrating a buffer device according to an embodiment of the present application;

FIG. 5 is a schematic cross-sectional view of a damper device with a swing door in a closed position according to an embodiment of the present application;

FIG. 6 is a schematic cross-sectional view of a damper device with a swing door in an open state according to an embodiment of the present application;

FIG. 7 is a perspective view of a pivot pin according to an embodiment of the present application;

FIG. 8 is a schematic diagram illustrating a portion of the components of a damper device according to an embodiment of the present application.

Detailed Description

Referring now to fig. 1, fig. 1 illustrates the construction of a swing door assembly 200 in accordance with an embodiment of the present application. The swing door assembly 200 includes a buffering device 100, a swing door 400, and a door frame 300. The damper device 100 connects the swing door 400 and the door frame 300 together.

As shown in fig. 2 to 4, the damper device 100 includes a housing 1, a roller pin 2, a damper 3, a top block 5, a slider 6, and an elastic member 4. The shell 1 comprises a shell 11, a top cover 12, a mounting seat 13 and a limiting block 14. The housing 11 includes two side plates 111 and a bottom plate 112. Both the side plates 111 and the bottom plate 112 are configured as rectangular plates. The two side plates 111 are parallel to each other. The bottom plate 112 is disposed between the two side plates 111 and perpendicular to the side plates 111, and opposite sides of the bottom plate 112 are respectively connected to bottom ends of the two side plates 111. The top cover 12 is configured as a rectangular plate. The top cover 12 covers the top ends of the two side plates 111 facing away from the bottom plate 112. The top cover 12 and the bottom plate 112 are parallel to each other. The mount 13 is disposed between the two side plates 111, and between the top cover 12 and the bottom plate 112. The mounting seat 13 is connected with the bottom plate 112 by screws, and the mounting seat 13 is connected with the top cover 12 by screws. The stopper 14 is disposed between the two side plates 111, and between the top cover 12 and the bottom plate 112. The mounting seat 13 is mutually separated from the limiting block 14, the limiting block 14 is connected with the bottom plate 112 through screws, and the limiting block 14 is connected with the top cover 12 through screws. The mounting seat 13, the shell 11, the top cover 12 and the limiting block 14 enclose a straight-bar-shaped inner cavity 15, and the cross section of the inner cavity 15 is rectangular. The top cap 12 is close to the one end of stopper 14 and is provided with first through-hole 121, and the bottom plate 112 is close to the one end of stopper 14 and is provided with second through-hole 113. The first through hole 121 and the second through hole 113 are coaxially disposed.

As shown in fig. 7, the roller pin 2 is constructed in a substantially cylindrical structure. The rotating shaft pin 2 is inserted through the first through hole 121 and the second through hole 113 to form a rotating connection with the housing 1. One end of the roller pin 2 is located within the inner cavity 15 and one end of the roller pin 2 extends out of the inner cavity 15. The extending direction of the roller pin 2 is perpendicular to the extending direction of the inner cavity 15. The roller pin 2 comprises a first mating segment 22, a second mating segment 21 and a connecting segment 23. The first mating segment 22 and the second mating segment 21 are both located within the interior cavity 15, and the connecting segment 23 is located outside the interior cavity 15. The first mating segment 22 is connected to the second mating segment 21, and the second mating segment 21 is connected to the connecting segment 23. The first fitting section 22 is provided on its outer peripheral wall with a first projection 221 projecting radially outwardly. The first protrusion 221 includes a top end and a bottom end opposite to the top end, the top end of the first protrusion 221 is an outward end of the first protrusion 221 in the radial direction of the roller pin 2, and the bottom end of the first protrusion 221 is an inward end of the first protrusion 221 in the radial direction of the roller pin 2. The second fitting section 21 is provided on its outer peripheral wall with a second projection 211 projecting radially outwardly. The second protrusion 211 includes a top end and a bottom end opposite to the top end, the top end of the second protrusion 211 is an end of the second protrusion 211 facing outward in the radial direction of the rotation shaft pin 2, and the bottom end of the second protrusion 211 is an end of the second protrusion 211 facing inward in the radial direction of the rotation shaft pin 2. The tip of the first protrusion 221 and the tip of the second protrusion 211 are perpendicular to each other.

As shown in fig. 5 and 6, the damper 3 is disposed in the inner chamber 15. The damper 3 includes a cylinder 31, a damper rod 32, and an elastic portion (not shown in the drawings). The cylinder 31 has a cylindrical outer contour. The cylinder 31 is arranged on the side of the inner cavity 15 facing away from the spindle pin 2. The extending direction of the cylinder 31 is perpendicular to the axial direction of the rotation shaft pin 2. The end of the cylinder 31 facing away from the roller pin 2 may be fixed to a mounting seat 13 of the housing 1, the mounting seat 13 being provided with a cylindrical recess into which the cylinder 31 is inserted. The damper rod 32 protrudes from the cylinder 31 toward the end of the rotation shaft pin 2 toward the first mating segment 22 of the rotation shaft pin 2 toward the cylinder 31. The elastic portion can be compressed to undergo compression elastic deformation. The elastic portion is provided in the cylinder 31. The elastic portion may be a compressed spring or compressed gas. The elastic portions are respectively abutted against the damper rod 32 and the cylinder body 31, and the elastic portions are in a compressed state and apply an elastic force to the damper rod 32, the elastic force being directed toward the first fitting section 22 of the roller pin 2. The damper rod 32 can be pushed into the cylinder 31 and also pulled out of the cylinder 31. During the pushing of the damper rod 32 into the cylinder 31, the compression amount of the elastic portion becomes large, and the elastic force applied to the damper rod 32 by the elastic portion becomes large; during the process of pulling out the damper rod 32 from the cylinder 31, the compression amount of the elastic portion becomes small, and the elastic force applied to the damper rod 32 by the elastic portion becomes small. During the pushing and pulling of the damping rod 32, the damper 3 also generates a damping force to attenuate the energy of the pushing and pulling of the damping rod 32.

The top block 5 is constructed in a block-like structure. The top piece 5 is arranged between the first mating section 22 of the spindle pin 2 and the damping rod 32. The top block 5 may be fixed to an end of the damper rod 32 facing away from the cylinder 31 and abuts against the outer circumferential surface of the first mating segment 22 of the spindle pin 2.

The slide 6 is arranged on the side of the second mating section 21 of the spindle pin 2 close to the cylinder 31.

The elastic member 4 is capable of undergoing compression elastic deformation. The elastic member 4 may be a coil spring, a disc spring, a wave spring, or the like. The elastic member 4 is interposed between the slider 6 and the cylinder 31. One end of the elastic member 4 abuts against the slider 6, and the other end of the elastic member 4 abuts against the cylinder 31. The elastic member 4 is in a compressed state and exerts an elastic force on the slider 6 toward the second mating segment 21. The slider 6 is urged against the outer peripheral surface of the second fitting section 21 by the elastic force applied by the second fitting section 21.

The door frame 300 includes an upper beam 310, a lower beam 320, a first column 330, a second column 340, and a lower rotation shaft 350. The upper beam 310, the lower beam 320, the first upright 330, and the second upright 340 are each configured in a straight bar shape. The first post 330 and the second post 340 are equal in length. The first and second columns 330 and 340 are vertically disposed and spaced apart from each other. The upper beam 310 and the lower beam 320 are both horizontally disposed. The upper beam 310 has both ends respectively connected to the upper ends of the first and second columns 330 and 340, and the lower beam 320 has both ends respectively connected to the lower ends of the first and second columns 330 and 340. The upper beam 310, the lower beam 320, the first upright 330 and the second upright 340 are connected to form a rectangular frame. The upper door frame 300 is provided with a mounting groove. The housing 1 of the buffering device 100 is fixed in the installation groove, and the housing 1 of the buffering device 100 and the upper door frame 300 may be connected by a screw. The lower rotating shaft 350 is mounted at one end of the lower beam 320 near the first upright post 330, the lower rotating shaft 350 extends from the lower beam 320 to the upper beam 310, the lower rotating shaft 350 is rotatably connected with the lower beam 320, and the lower rotating shaft 350 can rotate around its own axis.

The swing door 400 includes a door panel 410 and a card holder 420. The door panel 410 is constructed as a rectangular plate. Door panel 410 may be a glass panel. The door panel 410 is disposed within the door frame 300. The cartridge 420 is constructed in a straight bar shape. The card holder 420 is disposed at a side of the top end of the door panel 410 near the first pillar 330. The pivot pin 2 of the buffer device 100 extends into the holder 420, and the pivot pin 2 cannot rotate relative to the holder 420. The lower end of the door panel 410 is connected to the lower rotating shaft 350.

As shown in fig. 5, when the hinge door 400 is in the completely closed state, the hinge pin 2 is in the initial position, the tip of the first protrusion 221 of the hinge pin 2 abuts against the top block 5, and the compression amount of the elastic portion in the damper 3 reaches the maximum compression amount; at the same time, the sliding block 6 abuts against the outer peripheral surface of the second matching section 21 at the side of the second protrusion 211, and the compression amount of the elastic member 4 reaches the minimum compression amount. The elastic coefficient of the elastic member 4 is much larger than that of the elastic portion of the damper 3, and even if the compression amount of the elastic member 4 reaches the minimum compression amount and the compression amount of the elastic portion of the damper 3 reaches the maximum compression amount, the moment applied to the rotation shaft pin 2 by the slider 6 is larger than the moment applied to the rotation shaft pin 2 by the top block 5.

In the process of opening the rotating shaft door 400, the rotating shaft door 400 drives the rotating shaft pin 2 to rotate in one direction, the ejector block 5 slides towards the bottom end of the first bulge 221 along the side wall of the first bulge 221, which is close to the second bulge 211, the ejector block 5 moves towards the direction away from the cylinder 31 of the damper 3, the compression amount of the elastic part in the damper 3 is reduced, the elastic force applied by the elastic part to the damping rod 32 is reduced, and then the thrust applied by the ejector block 5 to the first bulge 221 of the rotating pin is reduced, namely the moment applied by the ejector block 5 to the rotating shaft pin 2 is reduced; meanwhile, since the tip of the first protrusion 221 and the tip of the second protrusion 211 are perpendicular to each other, the slider 6 slides along the sidewall of the second protrusion 211 near the first protrusion 221 toward the tip of the second protrusion 211, the slider 6 moves toward the cylinder 31 near the damper 3, the compression amount of the elastic member 4 increases, the elastic force applied to the slider 6 by the elastic member 4 increases, and further the thrust force applied to the second protrusion 211 of the pivot pin 2 by the slider 6 increases, that is, the moment applied to the pivot pin 2 by the slider 6 increases. In this way, since the moment applied by the slider 6 to the pivot pin 2 is increased and the moment applied by the top block 5 to the pivot pin 2 is reduced, the directions of the two moments are opposite, and after a part of the moment applied by the slider 6 to the pivot pin 2 is offset by the moment applied by the top block 5 to the pivot pin 2, the moment to be overcome when the user pushes and pulls the door panel 410 to open the pivot door 400 is small, and the user can open the pivot door 400 only by lightly pushing or pulling the door panel 410.

As shown in fig. 6, when the pivot door 400 is in the fully opened state, the top end of the second protrusion 211 of the pivot pin 2 abuts against the slider 6, the compression amount of the elastic member 4 reaches the maximum compression amount, the top block 5 abuts against the outer peripheral surface of the first mating section 22 on the side of the first protrusion 221, and the compression amount of the elastic portion of the damper 3 reaches the minimum compression amount.

When the rotary shaft door 400 needs to be closed, a user only needs to lightly drive the rotary shaft door 400 to rotate, and as the moment applied by the sliding block 6 to the rotary shaft pin 2 is always larger than the moment applied by the top block 5 to the rotary shaft pin 2, the moment applied by the sliding block 6 to the rotary shaft pin 2 counteracts the moment applied by the top block 5 to the rotary shaft pin 2 and then can drive the rotary shaft pin 2 to rotate so as to drive the rotary shaft door 400 to be automatically closed. Meanwhile, in the process of closing the rotary shaft door 400, the top block 5 slides to the top end of the first protrusion 221 along the side wall of the first protrusion 221 near the second protrusion 211, the top block 5 moves to the direction of approaching the cylinder 31 of the damper 3, the compression amount of the elastic part in the damper 3 increases, the elastic force applied by the elastic part to the damping rod 32 increases, and further the thrust applied by the top block 5 to the first protrusion 221 of the rotary shaft pin increases, namely the moment applied by the top block 5 to the rotary shaft pin 2 increases; meanwhile, since the top end of the first protrusion 221 and the top end of the second protrusion 211 are perpendicular to each other, the slider 6 slides along the sidewall of the second protrusion 211 near the first protrusion 221 toward the bottom end of the second protrusion 211, the slider 6 moves in a direction away from the cylinder 31 of the damper 3, the compression amount of the elastic member 4 decreases, the elastic force applied to the slider 6 by the elastic member 4 decreases, and thus the thrust applied to the second protrusion 211 of the rotation shaft pin 2 by the slider 6 decreases, that is, the moment applied to the rotation shaft pin 2 by the slider 6 decreases. In this way, the moment applied to the pivot pin 2 by the slider 6 is reduced, the moment applied to the pivot pin 2 by the top block 5 is increased, and the difference between the moment applied to the pivot pin 2 by the slider 6 and the moment applied to the pivot pin 2 by the top block 5 is smaller and smaller along with the closing of the pivot door 400, that is, the driving force applied to the pivot door 400 during the closing process is smaller and smaller, and at the same time, the damper 3 can provide motion damping for the closing of the pivot door 400, thereby avoiding the door panel 410 from pinching hands during the automatic closing of the pivot door 400.

Meanwhile, the buffer device 100 has the advantages of simple internal structure, easy assembly, easy maintenance, compact structure, small volume and high reliability. In particular, the rotation shaft pin 2 can be rotated by at least 180 °, and the rotation shaft door 400 to which the damper device 100 is mounted can be opened both inward and outward.

In one exemplary embodiment, as shown in fig. 7, the first protrusion 221 is gradually wider in width from the top end thereof to the bottom end thereof. The first protrusion 221 is gradually wider in width from its top end to its bottom end. I.e., the first protrusions 221 and the second protrusions 211 are each constructed in a protrusion structure having a top end narrower than a bottom end.

Thus, the side wall of the first protrusion 221 is a slope inclined to the protruding direction of the first protrusion 221, along which the top block 5 can slide more smoothly. The side wall of the second protrusion 211 is also an inclined surface inclined to the protruding direction of the second protrusion 211, and the slider 6 can slide along the inclined surface more smoothly. The rotating shaft pin 2 is not easy to be blocked when rotating.

In an exemplary embodiment, a first groove 222 is further provided on the outer circumferential wall of the first mating section 22, the first groove 222 being recessed inwardly from the outer circumferential wall, the first groove 222 being adjacent to the first protrusion 221 in the circumferential direction of the rotation shaft pin 2, the first groove 222 and the second protrusion 211 being adjacent in the axial direction of the rotation shaft pin 2.

The second fitting section 21 is further provided with a second groove 212 on the outer peripheral wall, the second groove 212 being recessed inwardly from the outer peripheral wall, the second groove 212 being adjacent to the first protrusion 221 in the axial direction of the rotation shaft pin 2, the second groove 212 being adjacent to the second protrusion 211 in the circumferential direction of the rotation shaft pin 2.

During the door opening process, the roller pin 2 rotates in one direction, the top block 5 slides into the first groove 222 from the first protrusion 221, and the sliding block 6 slides to the top end of the second protrusion 211 from the second groove 212; during the closing of the door, the rotation shaft pin 2 rotates in the other direction, the top block 5 slides from the first groove 222 to the top end of the first protrusion 221, and the slider 6 slides from the top end of the second protrusion 211 into the second groove 212. In opening and closing the door, the stroke of the top block 5 and the slider 6 is larger, and the variation in the compression amount of the elastic portion and the elastic member 4 is larger.

In an exemplary embodiment, two second projections 211 are provided on the second mating segment 21. The two second protrusions 211 are respectively arranged at two opposite sides of the second matching section 21, and the two second protrusions 211 protrude towards the direction away from each other. The second groove 212 is provided between the two second protrusions 211.

Two first grooves 222 are provided on the first mating segment 22. Two first grooves 222 are respectively provided on opposite sides of the first mating segment 22. The first protrusion 221 is disposed between the two first grooves 222.

In this way, the sliding block 6 abuts against one of the two second protrusions 211 of the second mating segment 21 when the swing door 400 is opened inward, and the sliding block 6 abuts against the other of the two second protrusions 211 of the second mating segment 21 when the swing door 400 is opened outward. Whether the swing door 400 is opened inward or outward, at least one second protrusion 211 pushes the slider 6 to compress the elastic member 4, and the elastic member 4 can push the second protrusion 211 to automatically close the door when the swing door 400 is closed. The top piece 5 can slide from the first protrusion 221 into one of the first grooves 222 whether the swing door 400 is opened inward or outward.

In an exemplary embodiment, the slide 6 is configured as a cylindrical structure. A slideway is arranged in the middle of the slide block 6. The sliding block 6 is sleeved on the top block 5, and the top block 5 is at least partially positioned in a slideway of the sliding block 6. A clearance fit is formed between the slider 6 and the top piece 5. The extending direction of the slideway of the slide block 6 is the same as the extending direction of the damping rod 32. The slider 6 slides with respect to the top block 5 in a direction parallel to the extension direction of the damper rod 32.

In this way, the top block 5 limits the slider 6 so that the slider 6 can only slide in the extending direction parallel to the damper rod 32, and it is difficult for the slider 6 to be in a position out of between the elastic member 4 and the rotation shaft pin 2.

In an exemplary embodiment, two second mating segments 21 are provided, the two second mating segments 21 being disposed at opposite ends of the first mating segment 22, respectively. The parts of the end parts of the sliding blocks 6 positioned on two opposite sides of the sliding way are respectively abutted against the two second matching sections 21.

Like this, two second cooperation sections 21 butt respectively in the tip of slider 6 be located the part of slide opposite both sides, and balanced pressure is exerted to the both sides of slider 6 to two second cooperation sections 21 makes slider 6 atress more reasonable.

In an exemplary embodiment, the top block 5 is connected to an end of the damping rod 32 facing away from the cylinder 31. The top block 5 and the damping rod 32 can be welded and bonded. The top block 5 is fixed at one end of the damper rod 32, and the top block 5 does not separate from the position between the damper rod 32 and the rotation shaft pin 2 when moving.

In an exemplary embodiment, as shown in fig. 8, a screw hole 51 is provided in the top block 5, and an external thread is provided at an end of the damping rod 32 facing away from the cylinder 31. The end of the damper rod 32 having the screw thread is screwed into the screw hole 51 of the top block 5, thereby allowing the screw thread connection between the damper rod 32 and the top block 5. The damping rod 32 is in threaded connection with the top block 5, and the damping rod 32 is more convenient to assemble with the top block 5.

In an exemplary embodiment, the elastic member 4 is a coil spring, and the elastic member 4 is sleeved on the damping rod 32. Thus, due to the limitation of the damping rod 32 to the elastic member 4, the elastic member 4 can only be shortened along the damping rod 32 without being bent when the elastic member 4 is compressed.

In an exemplary embodiment, the cushioning device 100 further includes a first washer 71 and a second washer 72. The first gasket 71 and the second gasket 72 are each configured in a ring shape. The first gasket 71 is disposed in the first through hole 121 of the housing 1. The second gasket 72 is disposed in the second through hole 113 of the housing 1. The first washer 71 is disposed coaxially with the second washer 72. The first washer 71 and the second washer 72 are both sleeved on the rotating shaft pin 2. The first washer 71 and the second washer 72 are each clearance-fitted with the rotation shaft pin 2.

The first washer 71 and the second washer 72 can prevent the housing 1 and the rotation shaft pin 2 from being worn out by direct contact with each other, and make the rotation of the rotation shaft pin 2 smoother.

In an exemplary embodiment, the mounting base 13 of the housing 1 is further provided with an adjustment screw hole 132. The adjustment screw holes 132 may be provided in plural, for example, 4. The plurality of adjustment screw holes 132 penetrate through the mounting seat 13. The plurality of adjustment screw holes 132 may be arranged in a matrix.

The buffering device 100 further comprises an adjusting screw 10. The number of the adjustment screws 10 is the same as the number of the adjustment screw holes 132. The adjusting screws 10 are arranged in one-to-one correspondence with the adjusting screw holes 132. Each adjustment screw 10 is screwed into its corresponding adjustment screw hole 132. One end of the adjusting screw 10 extends into the inner cavity 15 of the shell 1, and the end of one end of the adjusting screw 10 is propped against the end of one end of the cylinder 31, which is opposite to the damping rod 32.

The adjusting screw 10 can adjust the distance between the cylinder 31 and the rotating shaft pin 2, the longer the adjusting screw 10 stretches into the shell 1, the shorter the distance between the cylinder 31 and the rotating shaft pin 2, so that the larger the compression amount of the elastic part of the elastic piece 4 and the damper 3 is, and the adjusting screw 10 can further adjust the speed and the force of the rotating shaft door 400 for automatically closing the door.

In an exemplary embodiment, the damping device 100 further comprises a spring seat 9. The middle part of spring holder 9 is provided with the through-hole. The spring seat 9 is sleeved on the buffer rod 32 and is sandwiched between the cylinder 31 and the elastic member 4. The spring seat 9 is provided with a recess towards one end of the resilient member 4, into which recess one end of the resilient member 4 protrudes. The spring seat 9 can separate the elastic member 4 from the cylinder 31 and fix the elastic member 4 near one end of the cylinder 31.

The present application has been described in terms of several embodiments, but the description is illustrative and not restrictive, and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the described embodiments. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or in place of any other feature or element of any other embodiment unless specifically limited.

The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The disclosed embodiments, features and elements of the present application may also be combined with any conventional features or elements to form a unique inventive arrangement as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive arrangements to form another unique inventive arrangement as defined in the claims. It is therefore to be understood that any of the features shown and/or discussed in the present application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not to be restricted except in light of the attached claims and their equivalents. Further, various modifications and changes may be made within the scope of the appended claims.

Furthermore, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other sequences of steps are possible as will be appreciated by those of ordinary skill in the art. Accordingly, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Furthermore, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.

Claims (12)

1.A cushioning device, comprising:

the shell is internally provided with an inner cavity;

the rotating shaft pin is rotationally connected with the shell and comprises a first matching section and a second matching section which are both positioned in the inner cavity;

The damper is arranged in the inner cavity and comprises a cylinder body, a damping rod extending from the cylinder body to the first matching section and an elastic part arranged in the cylinder body, wherein the elastic part is used for applying elastic force to the damping rod towards the first matching section;

the ejector block is clamped between the first matching section and the damping rod;

the sliding block is arranged at one side of the second matching section, which is close to the cylinder body;

the elastic piece is clamped between the sliding block and the cylinder body and is used for applying elastic force towards the second matching section to the sliding block;

the first matching section is provided with a first protrusion protruding outwards in the radial direction, the second matching section is provided with a second protrusion protruding outwards in the radial direction, the directions of the top ends of the first protrusion and the second protrusion are mutually perpendicular, and the moment applied by the sliding block to the rotating shaft pin is configured to be always larger than the moment applied by the top block to the rotating shaft pin.

2. The cushioning device of claim 1, wherein said first projection tapers in width from its top end to its bottom end; and/or

The second protrusion is wider in a direction from a top end thereof to a bottom end thereof.

3. The buffering device according to claim 1, wherein a first groove is further provided on an outer peripheral wall of the first fitting section, the first groove being adjacent to the first projection in a circumferential direction of the roller pin, and being adjacent to the second projection in an axial direction of the roller pin; and/or

A second groove is further provided on the outer peripheral wall of the second fitting section, the second groove being adjacent to the first projection in the circumferential direction of the roller pin and being adjacent to the second projection in the axial direction of the roller pin.

4. A cushioning device according to claim 3, wherein said second mating segment is provided with two said second projections, one on each side of said second mating segment, said second grooves being provided between said second projections; and/or

The first matching section is provided with two first grooves, the two first grooves are respectively arranged on two opposite sides of the first matching section, and the first protrusion is arranged between the two first grooves.

5. The cushion device according to any one of claims 1 to 4, wherein the slider is configured as a cylinder fitted over the top block, the slider being slidable relative to the top block in the extending direction of the damper rod.

6. The cushioning device of claim 5, wherein two of said second mating segments are provided, two of said second mating segments being provided at opposite ends of said first mating segment.

7. The cushioning device of any one of claims 1-4, wherein said top block is connected to an end of said dampening bar facing away from said cylinder.

8. The cushioning device of claim 7, wherein said top block is threadably connected to an end of said dampening bar facing away from said cylinder.

9. The cushioning device of any one of claims 1-4, wherein said elastic member is a coil spring sleeved on said damper rod.

10. The cushioning device of claim 1, wherein opposite sides of said housing are provided with a first through hole and a second through hole coaxial with said first through hole, respectively;

the buffer device also comprises a first gasket arranged in the first through hole and a second gasket arranged in the second through hole;

the first gasket and the second gasket are sleeved on the rotating shaft pin and are in clearance fit with the rotating shaft pin.

11. The cushioning device of any one of claims 1-4, wherein said housing is further provided with an adjustment screw hole therethrough;

The buffer device also comprises an adjusting screw screwed into the adjusting screw hole;

one end of the adjusting screw is propped against one end of the cylinder body, which is away from the damping rod.

12. A revolving door assembly comprising a door frame, a revolving door and a cushioning device according to any one of claims 1 to 11;

the rotating shaft pin is connected with the rotating shaft door, and the shell is connected with the door frame.